binary file/o in managed c++

[The unProfessional]

I'm having difficulty figuring out a simple way to dump unmanaged structure
and/or class data to binary files.

In standard C++:
--------------------------
typedef struct tagS1
{
DWORD dwBlah;
CHAR szBlah[64];
} S1;

....

S1 s1;

FILE *fd = fopen ("c:\....", "wb");

fwrite (&s1, sizeof(s1), 1, fd);

fclose (fd);
--------------------------

I really don't want to have to move a ton of pre-defined structures to
managed code and use BinaryFormatters, pad my strings, etc.

I attempted to use fwrite in managed c++, but it appears to cause an error
in the internal file-locking mechanism.

Ultimately, I'm hoping to take advantage of some of the managed set,
especially easy GUI creation, but I need some pure-C++ functionality (such
as what's described above). Doesn't managed C++ support the standard C++
libraries? If not, isn't that contrary to it's purpose?

Any info or advice would be GREATLY appreciated

I'd like to harness some of the ease of the .net framework (better than
MFC), but without losing the ability to write regular old C++. Is it even
possible?

 

[Ronald Laeremans [MSFT]]

There is no reason that I know off that fwrite should not work identically.
Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

 

[The unProfessional]

Hi Ronald,

Thanks alot for your time.

I'll put together a quick example and send it on over... Should I email you
directly?

Sincerely,
Bill

There is no reason that I know off that fwrite should not work identically.
Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

I'm having difficulty figuring out a simple way to dump unmanaged
structure
and/or class data to binary files.

In standard C++:
--------------------------
typedef struct tagS1
{
DWORD dwBlah;
CHAR szBlah[64];
} S1;

...

S1 s1;

FILE *fd = fopen ("c:\....", "wb");

fwrite (&s1, sizeof(s1), 1, fd);

fclose (fd);
--------------------------

I really don't want to have to move a ton of pre-defined structures to
managed code and use BinaryFormatters, pad my strings, etc.

I attempted to use fwrite in managed c++, but it appears to cause an error
in the internal file-locking mechanism.

Ultimately, I'm hoping to take advantage of some of the managed set,
especially easy GUI creation, but I need some pure-C++ functionality (such
as what's described above). Doesn't managed C++ support the standard C++
libraries? If not, isn't that contrary to it's purpose?

Any info or advice would be GREATLY appreciated

I'd like to harness some of the ease of the .net framework (better than
MFC), but without losing the ability to write regular old C++. Is it even
possible?

 

[Ronald Laeremans [MSFT]]

Yes, you can mail me. The obvious transformation of my posting alias is my
real MS email address.

Ronald

Hi Ronald,

Thanks alot for your time.

I'll put together a quick example and send it on over... Should I email
you
directly?

Sincerely,
Bill

There is no reason that I know off that fwrite should not work identically.
Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

I'm having difficulty figuring out a simple way to dump unmanaged
structure
and/or class data to binary files.

In standard C++:
--------------------------
typedef struct tagS1
{
DWORD dwBlah;
CHAR szBlah[64];
} S1;

...

S1 s1;

FILE *fd = fopen ("c:\....", "wb");

fwrite (&s1, sizeof(s1), 1, fd);

fclose (fd);
--------------------------

I really don't want to have to move a ton of pre-defined structures to
managed code and use BinaryFormatters, pad my strings, etc.

I attempted to use fwrite in managed c++, but it appears to cause an error
in the internal file-locking mechanism.

Ultimately, I'm hoping to take advantage of some of the managed set,
especially easy GUI creation, but I need some pure-C++ functionality (such
as what's described above). Doesn't managed C++ support the standard C++
libraries? If not, isn't that contrary to it's purpose?

Any info or advice would be GREATLY appreciated

I'd like to harness some of the ease of the .net framework (better than
MFC), but without losing the ability to write regular old C++. Is it even
possible?